Aspartic acid, N,N'-(2-methyl-1,5-pentanediyl)bis-, tetraethyl ester

Aspartic acid, N,N'-(2-methyl-1,5-pentanediyl)bis-, tetraethyl ester (CAS 168253-59-6), commercially known as Desmophen 2061 BD, is a polyaspartic ester used as a reactive building block in polyurea and polyurethane coating systems.

It functions as a secondary diamine equivalent, reacting with isocyanates to control cure speed and film formation in high-performance coating formulations. In protective coatings, it enables fast-cure, two-component polyaspartic topcoats.

These systems are ideal for industrial floors, parking decks, and concrete surfaces where rapid return-to-service is critical. Automotive refinish and OEM coating formulators use it to achieve high gloss, UV-stable finishes.

It offers an extended pot life compared to conventional aliphatic polyurea systems. Adhesive and sealant manufacturers incorporate it into flexible, weather-resistant formulations for construction joints and structural bonding applications.

It is also used in elastomeric systems where controlled reactivity with HDI or IPDI-based isocyanates is required. This helps to balance mechanical performance and the processing window during application.

Supplied as a clear to slightly yellow liquid, it is typically available in drum and IBC quantities suited to industrial formulation volumes. The product is available at technical grade for polymer applications.

This grade is aligned with performance specifications relevant to coatings and industrial manufacturing. Buyers should confirm active content and equivalent weight with the supplier to ensure compatibility with specific isocyanate indices.